A meta-analysis of the effects in alpha acoustic indices DOI Open Access

Yanyi Wang,

Yimei Zhang, Canwei Xia

et al.

Biodiversity Science, Journal Year: 2023, Volume and Issue: 31(1), P. 22369 - 22369

Published: Jan. 1, 2023

Background: Many animals such as mammals, birds, amphibians, fishes and arthropods, produce sounds when moving, communicating or sensing their environment.Building upon the rich legacies of bioacoustics animal communication, acoustic properties from soundscape are used to monitor assess changes in communities related environments.During past decade, many indices have been developed can be divided into two categories, namely alpha beta indices.Alpha reflect information recording while focus on comparison differences between different recordings.There far more empirical studies application than indices.However, patterns contradictory.Before applied widely, it is necessary understand better how well they environments monitored.Aims: To make general inferences mixed evidence, associations animaldiversity, habitat quality, activity were quantitatively reviewed based meta-analytic approach.Methods: Both key word searches cross-reference conducted, 2,845 pairs data other variables collected 136 references.For which 50 times, direction was tested by sign test.Then, maximum likelihood method employed estimate probability density function summary effect (i.e., correlation coefficient index variable).Lastly, coefficients calculated function. Results & Conclusion:Eight commonly involved study, complexity (ACI), entropy (H) (including closely indices: temporal spectral index), bioacoustic (BI), normalized difference (NDSI), diversity (ADI), evenness (AEI), richness (AR), number peaks (NP).Among these indices, ACI most frequently positively with diversity, activity.The highest association appeared at relationship terrestrial activity, mean size 0.53.Besides, always trivial, sizes generally less 0.30.The only significantly negative occurred AEI -0.18.The robustness main results thoroughly analyzed, strengths weaknesses monitoring through also discussed.This study expected provide a guideline for selection future research.

Language: Английский

Soundscape Analytics: A New Frontier of Knowledge Discovery in Soundscape Data DOI
Bryan C. Pijanowski,

Francisco Rivas Fuenzalida,

Subham Banerjee

et al.

Current Landscape Ecology Reports, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 21, 2024

Language: Английский

Citations

3
Free-ranging livestock changes the acoustic properties of summer soundscapes in a Northeast Asian temperate forest DOI
Yifei Sun, Shizheng Wang, Jiawei Feng

et al.

Biological Conservation, Journal Year: 2023, Volume and Issue: 283, P. 110123 - 110123

Published: May 17, 2023

Language: Английский

Citations

8
Listening for change: quantifying the impact of ecological restoration on soundscapes in a tropical dry forest DOI Creative Commons
Pooja Choksi, Mayuri Kotian, Siddharth Biniwale

et al.

Restoration Ecology, Journal Year: 2023, Volume and Issue: 31(4)

Published: Jan. 5, 2023

Ecological restoration is crucial to mitigate climate change and conserve biodiversity, accurately monitoring responses imperative guide current future efforts. This study examines the impact of ecological a tropical dry forest in Central India. Here, state department nongovernmental organization work with local communities remove an invasive shrub, Lantana camara , forest, assist natural regeneration, primarily for purpose improving access resources forest‐dependent people. We used acoustic technology examine bird community composition space (ASU) across comparable restored, unrestored (with L. ), naturally low density (LLD) sites. found no significant difference cumulative number species detected between site types (median restored LLD = 38, 41). sites ( r 2 0.049, p ≤ 0.001). ASU differs 0.023, 0.10), positively associated compared sites, which could represent temporary increase as animal are reorganized after complete removal . Our results suggest that small‐scale efforts aim help meet livelihood needs have potential contribute goals this landscape. However, it necessary continue monitor regeneration trajectory possible changes ASU.

Language: Английский

Citations

6
Broadening the focus of forest conservation beyond carbon DOI Creative Commons
Zuzana Buřivalová, Natalie Yoh,

Rhett Butler

et al.

Current Biology, Journal Year: 2023, Volume and Issue: 33(11), P. R621 - R635

Published: June 1, 2023

Language: Английский

Citations

6
Tree diversity and liana infestation predict acoustic diversity in logged tropical forests DOI Creative Commons
Zachary Chu, Cindy C.P. Cosset, Catherine Finlayson

et al.

Biological Conservation, Journal Year: 2024, Volume and Issue: 291, P. 110488 - 110488

Published: Feb. 8, 2024

Logged tropical forests can retain a great deal of biodiversity, but there is substantial variation in the type and severity habitat degradation caused by logging. Logging-induced vary significantly at fine spatial scales, with differing effects on plant communities growth lianas, which are woody, climbing vines that proliferate degraded infest trees onto them competing for above below ground resources. The impacts such fine-scale structure faunal diversity relatively poorly known. We recorded soundscapes local-scale selectively logged old-growth primary Malaysian Borneo to examine how changes forest predict acoustic indices known correlate biodiversity indices. show relating higher soundscape increase liana prevalence decline tree species richness unaffected load adult trees. Our results suggest data represent simple, practicable measure detecting patterns response post-logging structure. findings also retaining many lightly infested lianas optimal outcome biodiversity. This emphasises need restoration retains some climbers, rather than blanket-cutting all stems projects seeking return towards their state.

Language: Английский

Citations

2
Temporal dynamics of acoustic diversity in managed forests DOI Creative Commons

Sandra Müller,

Olaf Jahn, Kirsten Jung

et al.

Frontiers in Ecology and Evolution, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 24, 2024

Introduction In production forests, management can have cascading effects on biodiversity and ecosystem services. Acoustic diversity reflects the of vocalizing animals has also considerable recreational value for human well-being, but relationship between acoustic forest remains largely unexplored Method We recorded plots along a gradient silvicultural intensity (SMI) in three regions Germany. explored diurnal seasonal temporal dynamics index (ADI) from March to July using generalized additive mixed models (GAMMs). further investigated interrelation intensity, structural diversity, as well tree bird species richness abundance equation modeling (SEM). Results Silvicultural had significant ADI May June dawn till dusk, variance explained by SMI was low. confirmed our hypothesis that reduced due its abundance. Discussion indices provide valuable insights into how affects activity soniferous communities. discuss this indicate both changes their vocal activity. address potential implications management.

Language: Английский

Citations

2
Changes in floristic diversity and stand damage of tropical forests caused by logging operations in North Kalimantan, Indonesia DOI Open Access

Juang Rata Matangaran,

INTAN NOER ANISSA,

Qi Adlan

et al.

Biodiversitas Journal of Biological Diversity, Journal Year: 2023, Volume and Issue: 23(12)

Published: Jan. 9, 2023

Abstract. Matangaran JR, Anissa IN, Adlan Q, Mujahid M. 2022. Changes in floristic diversity and stand damage of tropical forests caused by logging operations North Kalimantan, Indonesia. Biodiversitas 23: 6358-6365. Selective cutting natural Indonesia has been going on for decades. As a consequence, such activities cause disturbances vegetation cover indicated changes evenness, forest stands mortality juvenile trees. This research aimed to determine evenness before after harvesting at seedling, saplings, poles tree levels, opening, the number regeneration, relationship between felling intensity opening. The was conducted concession applying Reduced Impact Logging (RIL) Kalimantan restricting timber only commercial trees with diameter more than 50 cm. result found 38 species plot average 6.5 per hectare. Before harvesting, it that there were slight indices sapling, pole levels. percentage 17.8%, opening 19.76 %, which comparably lower practices other areas. Nonetheless, we strong positive findings this study provide another evidence is necessary implement reduced impact reduce ecosystems due selective region. It important limit logged hectare order minimize impacts facilitate regeneration.

Language: Английский

Citations

5
Sounding out a continent: seven decades of bioacoustics research in Africa DOI
Frowin K. Becker, Fannie W. Shabangu, Tess Gridley

et al.

Bioacoustics, Journal Year: 2022, Volume and Issue: 31(6), P. 646 - 667

Published: Jan. 10, 2022

Bioacoustics has emerged as a useful method of data collection and analysis for diverse animals in wide range environments helped to describe, monitor, conserve some Africa's species biodiversity.However, little is known about how much it contributes the continent's research corpus.We report results from systematic review bioacoustics applications Africa that summarises current state field identifies opportunities.Using keyword searches bibliographic databases, scanning reference lists, placing appeals community we identified 727 publications between 1953 mid-2020.We documented variables ranging publication type author affiliation, geographic location, biome habitat, biological groups, type.Most (69%) studies were focused on animal behaviour, with terrestrial (88.6%), particularly mammals, substantially outweighing freshwater (4.8%) marine (6.6%) habitats.The majority (74.3%) authors who have contributed this body knowledge non-African affiliates.Our suggests considerable room expand institutionally, taxonomically, thematically.We highlight need potential more locally driven provide roadmap future across continent.

Language: Английский

Citations

7
Temporal Soundscape Patterns in a Panamanian Tree Diversity Experiment: Polycultures Show an Increase in High Frequency Cover DOI Creative Commons

Sandra Müller,

Oliver Mitesser,

Linda Oschwald

et al.

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: Feb. 8, 2022

In this ecoacoustic study we used the setting of a tropical tree diversity planted forest to analyze temporal patterns in composition soundscapes and test effects species richness on associated biodiversity measured as acoustic diversity. The analysis offers easy, rapid sustainable methods when assessing biodiversity. During last years quantification regional or global variability sounds different has been evolving into an important tool for conservation, especially since case studies confirmed relationship between land-use management, structure Here analyzed from two seasons (dry rainy season) aurally inspected subset audio recordings describe soundscape composition. Several indices were calculated performed correlation non-metric multidimensional scaling identify that: (i) complementary each other such represented aspects local (ii) related most strongly differences among richness, season day phase. Thus, chose “High Frequency Cover,” “Bioacoustic Index,” “Events Per Second” hypothesis that increases with increasing richness. Monocultures differed significantly polycultures during night recordings, respect High Cover. This index covers above 8 kHz thus represents part orthopteran community. We conclude young plantation had positive vocalizing communities. strongest found activity contrast birds, orthopterans have smaller home ranges, are therefore indicator small scale environmental conditions.

Language: Английский

Citations

7
Using passive acoustic monitoring to examine the impacts of ecological restoration on faunal biodiversity in the Western Ghats DOI Creative Commons
Vijay Ramesh, Priyanka Hariharan,

V.A. Akshay

et al.

Biological Conservation, Journal Year: 2023, Volume and Issue: 282, P. 110071 - 110071

Published: April 23, 2023

Monitoring programs aimed at assessing ecological restoration have often relied on the response of a single taxon owing to difficulty sampling multiple taxonomic groups simultaneously. Using passive acoustic monitoring, we examined impacts all vocalizing fauna simultaneously as well indicator taxon, birds. In our study, recorders were programmed collect data along gradient forest regeneration consisting actively restored (AR), naturally regenerating (NR), and mature benchmark (BM) sites in tropical biodiversity hotspot, Western Ghats southern India. For fauna, calculated space use, measure that reflects amount pattern sounds within each frequency bin for given time period. AR NR not significantly different from other, visual examination showed lack between 12 kHz 24 sites, suggesting limited insect activity. When considered birds alone (from manually annotated data), found significant differences proportion detections rainforest bird species compared open-country across treatment types, with highest reported BM (mean ± SD: 0.97 0.04), followed by (0.81 0.12) (0.71 0.17). Considering varied taxa habitat recovery over two decades, highlight need take multi-taxon approach while programs. We show it is now possible do so forests using monitoring.

Language: Английский

Citations

4